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'T. PARKER.

PULVERIZER.

No. 529,874. Patented Nov. 27, 1894.

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TiPARKER. PULVERIZBL No. 529,874. Patented Nov. 27, 1894.

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.TI'PARKER.

PULVERIZER. No. 529,874. Patented Nov. 27, 1894.

Vmw. z, W 7% provements in Pulverizers, (for which I have UNIT D STATES PATENT OFFICE.

THOMASPARKER, or TORONTO, CANADA, Ass'rcNon OF THREE-FOURTHS TO JoH o eLAs WRIGHT, FRANCIS FARQUHARSON STUART, AND ALEXANDER MAXWELL COLQUHOUN, OFSAME rL on.

PULVERIZER.

Y SPECIFICATION forming partof Letters Patent No."529,8"?4, dated November 27, 1 894. Application filed December a, 1893. Serial No. 493,097. on. model.) Patented in Canada January 4, 1894, No. 44,9 7.

To aZZ whom it may conceritz.

Be it known that I, THOMAS PARKER, manufacturer, of the cityof Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Imobtained a patent in Oanada, dated January 4, 1894, No. 44,997,) of which the following is a specification.

My invention relates to improvements in pulverizersand the object of the invention is, first, to devise a cheaply constructed and efficient pulverizer, which will rapidly reduce clay, rock or other substances to powder,

secondly, to provide means whereby only the completely pulverized clay may be ejected from the machine, and thirdly to provide a means to prevent damp clay when being pulverized from sticking to the bars, projections or walls of the pulverizing chamber and it consists essentially, first, of securing to a main shaft journaled in the endofa suitable chamber three disks one at each end and one intermediately situated between the end disks, the disks having cross rods extending from end to end parallel to the shaft'up'on which are loosely journaled a series of arms or beaters, which are caused to fly out by the rotary movement of the disks; secondly, of

providing at the one end of the machine preferably upon the main shaft a fan, which communicates with the main chamber-through a duct, which leads to the bottom of the ma chine, where it is connected to the chamber by upwardly extending passage-ways and further in providing an exit duct and separator provided with a bolting cloth through which the air is forced, the pulverized clay being designed to be ejected through the exit duct and separator by the fan, and, thirdly, of making the walls of the pulverizing chamber hollow and introducing steam through pipes into such hollow walls, the machine being otherwise constructed as hereinafter more particularly explained.

Figure 1, is a perspective view of my pulverizer with the duct and hopper removed, portions of the end and side being broken away so as to exhibit the construction. Fig. 2, is a cross section through the chamber, ducts, hopper and separator. Fig. 3 is'a longitudinal vertical section through the beaters and fan.

dicate corresponding parts in each figure.

' A, are the end walls, of the chamber, and, B, are the'side walls, which are made hollow for the purpose of receiving steam.

B, and, B",are theoutlet and inlet steam pipes connected to the opposite walls, B. The hollow walls are connected together by a pipe, B asindicated by dotted lines in Fig. 2.

; O, O, is the bottom, which is made in two sections secured together in the center by suitable bolts and to the bottom of the side walls by'suitable bolts. To the bottom section, 0,1 secure a series of projections, c, 0', extending across the machine. The bottom, 9, O is supported upon the cross beams, D, D V I E, is the main shaft of the machine, which is suitably journaled in the ends of the machine. A The main shaft-E, has secured to it the end disks, F,'F, and a central disk, F.

G,"arerods extending from one end to the other through the central disk, F. These rods aresituated near the periphery of the disks and are provided with a series of heaters, H, which are loosely journaled upon the rods. The hubs of the beaters are wider than the beaters and abut each other and there is only one beater extending out from the periphery of each hub, so that each beater will have perfect freedom of movement upon the rod. The beaters, I-I, extend between the disks from end to end of the rods.

I, is a fan casing, which is secured on one end, A, outside the pulverizing chamber.

J, is a fan, which is secured on the outer end of the shaft, E. The disks, F, and fan, J,

end of the shaft to that on which the fan. is situated.

L, is 'a conveying duct extending upwardly and laterally from the pulverizing, chamber In the drawings likeletters of reference ininto the separator, M. One sideof the separe driven from a pulley, K, on the opposite arator is provided with a bolting cloth screen, on, as indicated by dotted lines. The lower end of the separator is open.

O, is the feed hopper which is situated at the top of the pulverizing chamber at the right hand side.

P, is the air duct leading from the bottom of the fan casing, I, to beneath the bottom, 0, (3'. p, are the passage-ways leading upwardly from the air duct, 1?, through the bottom 0, 0', into the pulverizing chamber. The passage ways are situated between the spaces swept by the beaters, I-I.

Having now described the principal parts involved in my invention I shall briefly describe its operation.

Upon the power being applied to the pulley, K, the disks rotate in the direction indicated by arrow and the beaters, H, will be caused to fly out into the position shown by dotted lines. The clay, rock or other substances being fed into the hopper, 0, will be acted upon by the outwardly flung beater so that the material will be readily reduced to powder or pulverized. It will be readily seen that if the rock or clay form any obstruction to the heaters, H, that they will on account of being pivoted on the rods, G, pass over such rocks or projections but will quickly wear them away on account of the rapidity at which they are rotated. The fan, J, being driven also at a high rate of speed will force the air down through the duct, P, up through the passage way, 19, and the pulverized clay from the rock or solid clay will be thrown toward the left hand side of the machine (see Fig. 2) up through the duct, L, into the separator, M, where part may come in contact with the bolting cloth while the other will pass down into any suitable receptacle, which may be placed beneath such separator. The bolting cloth, m, of course allows of the air being blown out through it but prevents any of the pulverized clay from escaping through the opening covered by the bolting cloth.

From this description it will be seen that I provide a very effective pulverizer in which the heaters on account of being loosely swung upon the rods, G, are not subject to breakage and which will act very efiectively with the projections, c, 0, formed on the bottom of the pulverizing chamber, so as to rapidly grind up the material. Although I show no steam in the bottom sections it will of course be understood that the heat communicated from the hollow sides will be communicated to such bottom sections, 0, C, so as to prevent any sticking of the clay or material upon the projections, c, c, or at the bottom of the pulverto keep the clay at both the bottom and sides perfectly dry should damp clay be placed in the pulverizing chamber.

What I claim as my invention is-- 1. In a pulverizer the combination with the chamber to receive the material and a shaft journaled in the ends of the chamber and provided with disks, and rods extending between the disks secured in them near their periphery and parallel to the shaft, of a series of beaters having hubs wider than the beaters abutting each other in their supporting rods, such beaters being arranged when the shaft is in motion to extend entirely outside the circle of the disks and rotate in close proximity to the bottom of the chamber and the two series of rounded tapered projections c, c, similarly formed and having the broad end of the projections adapted to co-act with the striking side of the heaters, which pass between them as they rotate as and for the purpose specified.

2. In combination with the chamber, the shaftjournaled therein, disks on the shaft and rods extending between the disks, beaters journaled on such rods and abutting each other, the hopper and exit duct in juxta-position at the top of said chamber, a board situated between the duct and hopper and forming part of each, said duct and hopper extending down in proximity to the beaters, substantially as described.

3. The combination with the chamber, shaft journaled therein, disks on the shaft and rods extending between the end disks and beaters loosely journaled on such rods as specified, of a fan secured on thejouter end of the shaft and fan casing having a duct leading from it beneath the pulverizing chamber, such duct having a series of vertical passage-ways extending up into the chamber as and for the purpose specified.

4. The combination with the chamber, shaft journaled therein, disks on the shaft and rods extending between the end disks and beaters loosely journaled on such rods as specified, of the fan, J, provided with the casing, I, and duct P, leading from the casing to beneath the bottom of the pulverizing chamber and provided with vertical passageways p, leading into the pulverizing chamber, the duct, L, secured at the top of the pulverizing chamber and leading into the separator, M, which is provided with an opening covered by the bolting cloth, m, as and for the purpose specified.

THOMAS PARKER.

Witnesses:

B. BOYD, H. H. YOUNG. 

